I think it could work. Only the most lopsided trades should be discussed. Keeper value should also be taken into consideration. And in rare cases, 'intent' should also be considered.

I think with most trades one owner ultimately always wins over the other (completely even trades are few and far between). We have to use our discretion on which trades we think are 'veto worthy'. Reason being, I don't want to take the 'I just robbed your ass' factor out of doing trades. Crafty clever managers should still be rewarded.